Prior to purchasing 2 of these rechargeable toothbrushes, I had the 2 of the professional care 600 model and the difference between the 600 model and this are that the 600 charge lasts a bit longer between charges and the 600 also has a light when on the charger.
My decision to go for this particular toothbrush came down to value for money. The 600 worked out about 25% more, which does not sound like much, but to me I can spend that on other things, so spent it on extra toothbrush heads.
This toothbrush does the job as advertised, so I will give it 5 stars. The power is more than adequate, an overnight charge will make the toothbrush run for 8-10 thorough tooth cleans lasting approx 3 mins each and the charger is actually a lot smaller than the 600 model, which suits us better when going on holiday.